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To convert nm to meters: multiply by 10⁻⁹. To convert nm to micrometers: divide by 1,000.
1 nm = 10⁻⁹ m = 10 Å = 1,000 pm = 10⁻³ µm. One micrometer equals 1,000 nanometers.
For example, 1 Nanometer (nm) = 1000000 Femtometer (fm).
| Nanometer (nm) | Femtometer (fm) |
|---|---|
| 0.1 | 100000 |
| 0.5 | 500000 |
| 1 | 1000000 |
| 2 | 2000000 |
| 5 | 5000000 |
| 10 | 10000000 |
| 25 | 25000000 |
| 50 | 50000000 |
| 100 | 100000000 |
| 500 | 500000000 |
| 1000 | 1000000000 |
The nanometer is a unit of length equal to 10⁻⁹ meters, or one billionth of a meter.
1 nm = 10⁻⁹ m = 10 Å = 1,000 pm = 10⁻³ µm. One micrometer equals 1,000 nanometers.
To convert nm to meters: multiply by 10⁻⁹. To convert nm to micrometers: divide by 1,000.
Semiconductor chip feature sizes (5 nm, 3 nm transistors), UV light wavelengths, virus dimensions, and thin-film coatings.
A human hair is about 80,000–100,000 nm thick. The COVID-19 virus is approximately 100 nm in diameter.
Confusing nanometers with micrometers — they differ by a factor of 1,000. Be careful with nm vs. µm in specs.
Visible light wavelengths (380–700 nm) are a great anchor: red light ≈ 700 nm, violet light ≈ 380 nm.
The femtometer is a unit of length equal to 10⁻¹⁵ meters, commonly used to measure the size of atomic nuclei.
1 fm = 10⁻¹⁵ m = 1,000 am = 10⁻⁶ nm. One meter equals 10¹⁵ femtometers.
To convert fm to meters: multiply by 10⁻¹⁵. To convert meters to fm: multiply by 10¹⁵.
Describing the size of protons (~0.87 fm radius) and nuclear diameters (1–15 fm depending on the element).
A proton's charge radius is approximately 0.87 fm. The diameter of a uranium-238 nucleus is about 15 fm.
Confusing femtometers with nanometers — a femtometer is one million times smaller than a nanometer.
Remember: atoms are ~0.1 nm, but nuclei are ~1–10 fm — nuclei are about 100,000 times smaller than the whole atom.



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